Nothing ignites archaeological and historical curiosity more than an unexpected and mysterious discovery. A secret room newly uncovered by researchers at a Bronze Age temple in Sidon, Lebanon, is such a find.

Buried within the ruins of the temple, a “deeply concealed room” was found by a delegation from the British Museum, writes the The Daily Star.

The walls of the hidden underground room were “monumental”, almost 15 feet (4.5 meters) high, and the floor was 24 feet (7.5 meters) below ground. The room, believed to be an extension on the ancient temple, held pottery and wooden vessels and utensils for eating and drinking, as well as artifacts for rituals and celebrations. It is thought that it may have been reserved for high-status people of the community.